Changing Mobile Phones.

[derekpara]

My Nokia mobile phone is playing up but I have an almost identical Nokia without a SIM card.

I've tried using the card from the old phone but it shows 'invalid SIM' and doesn't work. What do I do ?

Sorry if it's a stupid question but I'm not a whizz with mobiles.

Cheers.

D

[SpikeyBush]

Sounds like the phone you're trying to use the sim card in is locked to a different network. Have a gander here for tips.
http://www.unlocknokia.com/

[derekpara]

Thanks, SB.